Results 51 to 60 of about 58,855 (160)
Digital Roots or Digital Routes? Broadband Expansion and the Rural‐Urban Migration in China
Population and Development Review, EarlyView.Abstract This study investigates how broadband internet affects rural–urban migration in China using the Universal Broadband and Telecommunication Services pilot program launched in 2015 as a quasi‐experimental setting. Analyzing China Household Finance Survey data (2013–2021) with difference‐in‐differences estimation, we find that improved internet ...
Shuang Ma, Ren Mu
wiley +1 more source
Semiparametric Dose Finding Methods
Journal of the Royal Statistical Society Series B: Statistical Methodology, 2017 Summary We describe a new class of dose finding methods to be used in early phase clinical trials. Under some added parametric conditions the class reduces to the family of continual reassessment method (CRM) designs. Under some relaxation of the underlying structure the method is equivalent to the cumulative cohort design, the modified ...
Clertant, M., O’Quigley, J.
openaire +2 more sources
When the Tail Wags the Dog: A Time‐Varying FCVAR Analysis of Bitcoin Market
Journal of Futures Markets, Volume 46, Issue 3, Page 529-544, March 2026.ABSTRACT This paper examines how the relationship between Bitcoin spot and futures markets has evolved using a time‐varying Fractionally Cointegrated Vector Autoregressive (FCVAR) model. We are the first to apply this methodology dynamically to cryptocurrency markets, allowing us to simultaneously analyze long‐run equilibrium, pricing patterns, market ...
Filippo di Pietro +2 more
wiley +1 more source
Locally Robust Semiparametric Estimation
Econometrica, 2018 Many economic and causal parameters depend on nonparametric or high dimensional first steps. We give a general construction of locally robust/orthogonal moment functions for GMM, where first steps have no effect, locally, on average moment functions. Using these orthogonal moments reduces model selection and regularization bias, as is important in many
Hidehiko Ichimura +4 more
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Semiparametric regression for circular response with application in ecology
Scandinavian Journal of Statistics, Volume 53, Issue 1, Page 54-101, March 2026.ABSTRACT A regression model for a circular response variable depending on a linear or a circular predictor is presented in this paper. The conditional density belongs to a parametric flexible family that allows for asymmetry and varying peakedness around the modal direction.
Jose Ameijeiras‐Alonso, Irène Gijbels
wiley +1 more source
Inequality and development: Evidence from semiparametric estimation with panel data [PDF]
Evidences from nonparametric and semiparametric unbalanced panel data models with fixed effects show that Kuznet’s inverted-U relationship is confirmed when economic development reaches a threshold.
Li, Kui-Wai, Zhou, X.
core +1 more source
Efficient multiple‐robust estimation for nonresponse data under informative sampling
Scandinavian Journal of Statistics, Volume 53, Issue 1, Page 395-412, March 2026.Abstract Nonresponse in probability sampling presents a long‐standing challenge in survey sampling, often necessitating simultaneous adjustments to address sampling and selection biases. We develop a statistical framework that explicitly models sampling weights as random variables and establish the semiparametric efficiency bound for the parameter of ...
Kosuke Morikawa +2 more
wiley +1 more source
Time‐Dependent Predictive Accuracy Metrics in the Context of Interval Censoring and Competing Risks
Biometrical Journal, Volume 68, Issue 1, February 2026.ABSTRACT Evaluating the performance of a prediction model is a common task in medical statistics. Standard accuracy metrics require the observation of the true outcomes. This is typically not possible in the setting with time‐to‐event outcomes due to censoring.
Zhenwei Yang +3 more
wiley +1 more source
Robustness of a semiparametric estimator of a copula [PDF]
Copulas offer a convenient way of modelling multivariate observations and capturing the intrinsic dependence between the components of a multivariate random variable.
Gunky Kim +2 more
core
Credit Risk Assessment in the Climate Shadow: Evidence From White and Grey Literature
Business Strategy and the Environment, Volume 35, Issue 2, Page 2526-2546, February 2026.ABSTRACT Climate change is reshaping financial stability, making climate risk a critical component of banks' risk management. However, the absence of standardized frameworks validated by central authorities hinders banks' ability to integrate climate risk into existing credit risk models.
Rodolfo Raimondi +3 more
wiley +1 more source